For those who don't know, IRC stands for Internet Relay Chat and Caelestia.net is a server used by members of the Artix Entertainment community, including the game and forum staff.
For more information and guides, please see the Caelestia IRC Guide and the Using IRC guide.

Common IRC clients include mIRC, a downloadable client, and Mibbit, a web-based browser client.

We now have a staff-only channel! /join #WikiStaff (PM Zyrain if you are not on the access list and auto-banned from the channel.)

Regarding channel rules and punishments; all users must abide to the HS Wiki Rules and the Caelestia Network Rules.
If users break a rule, such as swearing, impersonation, non-AE advertising, etc., kick them but give a reason why so they know what they've done. If they repeatedly violate the rules, you may ban them. If spammers/spam-bots attack the channel, ban them by their IP address.

To kick a user: /kick NAME REASON
To ban a user: /cs ban #HSWiki NAME
(Some clients allow you to do this by clicking on the user's name.)

To access a list of bans: /mode #HSWiki b
To unban a user: /cs unban #HSWiki NAME
(Some clients allow you to click and delete the ban.)